{"api_version":"1","generated_at":"2026-09-12T00:47:37+00:00","cve":"CVE-2026-89459","urls":{"html":"https://cve.report/CVE-2026-89459","api":"https://cve.report/api/cve/CVE-2026-89459.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89459","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89459"},"summary":{"title":"s390/percpu: Fix MVIY_PERCPU() with older binutils","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/percpu: Fix MVIY_PERCPU() with older binutils\n\nCommit a737737cdb9c (\"s390/percpu: Infrastructure for more efficient\nthis_cpu operations\") introduced MVIY_PERCPU(), which stringifies\narguments that are already C string literals. This generates an\nassembler macro invocation with whitespace-separated quoted arguments:\n\n  GEN_MVIY \"459712\" \"%r3\"\n\nGNU as versions prior to binutils 2.39 drop the separating whitespace\nbetween quoted macro arguments during input scrubbing. They\nconsequently parse the invocation as a single argument and emit\nrepeated warnings:\n\n  Warning: missing closing `\"'\n\nThe .ifc in GEN_MVIY never matches and GNU as exits successfully\nwithout emitting the mviy instruction. As a result, the interrupted\nper-CPU sequence is not marked in lowcore and the exception return\npath cannot repair the per-CPU address register after migration.\n\nAll MVIY_PERCPU() callers pass C string literals. Use them directly\nand separate the assembler macro arguments with an explicit comma. The\nresulting invocation is:\n\n  GEN_MVIY 459712, %r3\n\nThis form is unambiguous for GNU as and LLVM's integrated assembler.\nThis behavior was fixed in GNU as from binutils 2.39, but Linux\nsupports binutils 2.30.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:26","updated_at":"2026-09-11 20:19:26"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/101782f8945a125044347312d74d488c05741c4a","name":"https://git.kernel.org/stable/c/101782f8945a125044347312d74d488c05741c4a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/91770b08a120967077ae78600612f18bc5ee3caf","name":"https://git.kernel.org/stable/c/91770b08a120967077ae78600612f18bc5ee3caf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89459","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89459","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a737737cdb9c94e40a9926cdc2320f874c05d709 91770b08a120967077ae78600612f18bc5ee3caf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a737737cdb9c94e40a9926cdc2320f874c05d709 101782f8945a125044347312d74d488c05741c4a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/s390/include/asm/percpu.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"91770b08a120967077ae78600612f18bc5ee3caf","status":"affected","version":"a737737cdb9c94e40a9926cdc2320f874c05d709","versionType":"git"},{"lessThan":"101782f8945a125044347312d74d488c05741c4a","status":"affected","version":"a737737cdb9c94e40a9926cdc2320f874c05d709","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/s390/include/asm/percpu.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.2"},{"lessThan":"7.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"7.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"7.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/percpu: Fix MVIY_PERCPU() with older binutils\n\nCommit a737737cdb9c (\"s390/percpu: Infrastructure for more efficient\nthis_cpu operations\") introduced MVIY_PERCPU(), which stringifies\narguments that are already C string literals. This generates an\nassembler macro invocation with whitespace-separated quoted arguments:\n\n  GEN_MVIY \"459712\" \"%r3\"\n\nGNU as versions prior to binutils 2.39 drop the separating whitespace\nbetween quoted macro arguments during input scrubbing. They\nconsequently parse the invocation as a single argument and emit\nrepeated warnings:\n\n  Warning: missing closing `\"'\n\nThe .ifc in GEN_MVIY never matches and GNU as exits successfully\nwithout emitting the mviy instruction. As a result, the interrupted\nper-CPU sequence is not marked in lowcore and the exception return\npath cannot repair the per-CPU address register after migration.\n\nAll MVIY_PERCPU() callers pass C string literals. Use them directly\nand separate the assembler macro arguments with an explicit comma. The\nresulting invocation is:\n\n  GEN_MVIY 459712, %r3\n\nThis form is unambiguous for GNU as and LLVM's integrated assembler.\nThis behavior was fixed in GNU as from binutils 2.39, but Linux\nsupports binutils 2.30."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:43:22.007Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/91770b08a120967077ae78600612f18bc5ee3caf"},{"url":"https://git.kernel.org/stable/c/101782f8945a125044347312d74d488c05741c4a"}],"title":"s390/percpu: Fix MVIY_PERCPU() with older binutils","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89459","datePublished":"2026-09-11T19:43:22.007Z","dateReserved":"2026-09-11T19:38:34.707Z","dateUpdated":"2026-09-11T19:43:22.007Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:26","lastModifiedDate":"2026-09-11 20:19:26","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89459","Ordinal":"1","Title":"s390/percpu: Fix MVIY_PERCPU() with older binutils","CVE":"CVE-2026-89459","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89459","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/percpu: Fix MVIY_PERCPU() with older binutils\n\nCommit a737737cdb9c (\"s390/percpu: Infrastructure for more efficient\nthis_cpu operations\") introduced MVIY_PERCPU(), which stringifies\narguments that are already C string literals. This generates an\nassembler macro invocation with whitespace-separated quoted arguments:\n\n  GEN_MVIY \"459712\" \"%r3\"\n\nGNU as versions prior to binutils 2.39 drop the separating whitespace\nbetween quoted macro arguments during input scrubbing. They\nconsequently parse the invocation as a single argument and emit\nrepeated warnings:\n\n  Warning: missing closing `\"'\n\nThe .ifc in GEN_MVIY never matches and GNU as exits successfully\nwithout emitting the mviy instruction. As a result, the interrupted\nper-CPU sequence is not marked in lowcore and the exception return\npath cannot repair the per-CPU address register after migration.\n\nAll MVIY_PERCPU() callers pass C string literals. Use them directly\nand separate the assembler macro arguments with an explicit comma. The\nresulting invocation is:\n\n  GEN_MVIY 459712, %r3\n\nThis form is unambiguous for GNU as and LLVM's integrated assembler.\nThis behavior was fixed in GNU as from binutils 2.39, but Linux\nsupports binutils 2.30.","Type":"Description","Title":"s390/percpu: Fix MVIY_PERCPU() with older binutils"}]}}}